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| Titel: |
Removal of Copper (II) from Aqueous Solutions by Flotation using Polyaluminum Chloride Silicate (PAX-Xl60 S) As Coagulant and Carbonate Ion as Activator |
| Auteur: |
Ghazy, S. E. Mahmoud, I. A. Ragab, A. H. |
| Verschenen in: |
Environmental technology |
| Paginering: | Jaargang 27 (2006) nr. 1 pagina's 53-61 |
| Jaar: |
2006-01-01 |
| Inhoud: |
Flotation is a separation technology for removing toxic heavy metal ions from aqueous solutions. Here a simple and rapid flotation procedure is presented for the removal of copper(II) from aqueous solutions. It is based on the use of polyaluminum chloride silicate (PAX-XL60 S) as coagulant and flocculent, carbonate ion as activator and oleic acid (HOL) as surfactant. Both ion and precipitate flotation are included depending on the solution pH. Ion and precipitate flotation in the aqueous HOL-PAX-XL60 S-Cu2+-CO32- system gave powerful preferential removal of Cu2+ (F ∼100 %) over the HOL-PAX-XL60 S-Cu2+ system containing no CO32- ion (F ∼86 %). The role of CO32- ion is also evident from decreasing the dose of PAX-XL60 S from 700 mg l-1 to 200 mg l-1. The other parameters, influencing the flotation process, namely: metal ion, surfactant and PAX-XL60 S concentrations, ionic strength, temperature and foreign ions were examined. Moreover, the procedure was successfully applied to recover Cu2+ ions from different volumes up to 1 l and from natural water samples. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 12 van 12 gevonden artikelen
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